Double row self-aligning roller bearing 22000 23000 series NSK Self-aligning roller bearing 22317CDE4 1.Subject to bidirectional axial load 2.Standard:ISO9001:2008 3.OEM service Self-aligning roller bearing has two rows of spherical rollers, the outer race is provided with a common concave spherical raceway, while the inner race is provided with two concave spherical raceways that form an angle with the bearing axis. The curvature center of the outer raceway is consistent with the bearing center.